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Technical Data Sheet
PartsTable / COMPONENT / 4-40X5/16LGNYL0
4-40X5/16LGNYL0 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The 4-40X5/16LGNYL0 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-530-6818, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
4-40X5/16LGNYL0
NSN: 5340-00-530-6818
FSC: 5340
CAGE: 23050 — PRODUCT COMPONENTS CORPORATION (USA)
SPECIFICATIONS
Part Number4-40X5/16LGNYL0
NSN5340-00-530-6818
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4-40X5/16LGNYL0 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 0.813 INCHES NOMINAL IN
•
MATERIAL: PLASTIC, POLYETHYLENE (PP)
•
DESIGN TYPE: FRICTION
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
•
FEATURES PROVIDED: SHOULDER
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.813 INCHES NOMINAL IN
MATERIALPLASTIC, POLYETHYLENE (PP)
DESIGN TYPEFRICTION
OPENING INSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
FEATURES PROVIDEDSHOULDER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
NAS820-12AUpgraded Successor
successor cross-reference
successor
EP12Upgraded Successor
successor cross-reference
successor
325369PC2Upgraded Successor
successor cross-reference
successor
EP12SInterchangeable
interchangeable cross-reference
interchangeable
95-EP12Interchangeable
interchangeable cross-reference
interchangeable
9042-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-40X5/16LGNYL0?
4-40X5/16LGNYL0 is a 4-40X5/16LGNYL0.
What parts can replace 4-40X5/16LGNYL0?
There are 12 known substitutes for 4-40X5/16LGNYL0: NAS820-12A, EP12, 325369PC2 and 9 more. Substitute compatibility should be verified for your specific system.
Is 4-40X5/16LGNYL0 still available?
4-40X5/16LGNYL0 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026